I really just wanted to see what the difference in yield was, I don't have the post count/respect on this site to post this up because im sure I will get hated on, but here are the three studies I looked at. The first is the California EPA report from 1993 that set out the risk assessment profile and the second is a European Commission report on Paclobutrazol from 2011. The third is the “carcinogen report” from the EPA, 1987.
http://www.cdpr.ca.gov/docs/risk/rcd/paclobut.pdf
http://ec.europa.eu/food/plant/protection/evaluation/existactive/list_paclobutrazol_rr.pdf
http://www.epa.gov/iris/subst/0182.htm
(EPA report-93)
Despite stating, "Paclobutrazol is not intended to be used on food products," the reason it was banned was because of acute exposure during application, not residue left in the plant matter. Not only that, but for foliar feeding applications, I know of no one who foliar feeds BM.
"WORKER EXPOSURE
Surrogate data were used to estimate potential exposure via dermal contact, and inhalation of
mixer/loader/applicators spraying paclobutrazol on greenhouse plants. Exposure through the inhalation route was insignificant compared to potential dermal exposure. Greenhouse workers involved in tending the treated plants have potential occupational exposure through the dermal route.
CONCLUSIONS
Using laboratory animal toxicity data and surrogate worker exposure data, the calculated margins
of safety (MOSS) for potential acute exposure of mixer/loader/applicators and greenhouse workers are considered adequate. MOSS for potential chronic occupational exposure to paclobutrazol are also considered adequate."
(European Commission)
Ill just state the conclusion, this report was done using values found in plants grown with Pac, not acute exposure.
"The following reference values have been finalised as part of this re-evaluation:
ADI 0.022 mg/kg bw/day
ARfD 0.1 mg/kg bw
AOEL 0.1 mg/kg bw/day
With particular regard to residues, the review has established that the residues arising from the
proposed uses, consequent on application consistent with good plant protection practice, have no
harmful effects on human or animal health. The Theoretical Maximum Daily Intake (TMDI) is
lower than 0.03 % of the Acceptable Daily Intake (ADI), (calculated according to EFSA PRIMo
rev 2 model). Additional intake from water is not expected to give rise to intake problems.
Estimates of acute dietary exposure of adults and children revealed that the Acute Reference
Dose (ARfD) would not be exceeded (according to the UK consumption data <0.1% for UK
diets).
The review has identified several acceptable exposure scenarios for operators, workers and
bystanders, which require however to be confirmed for each plant protection product in
accordance with the relevant sections of the above mentioned uniform principles."
(EPA Report-87)
First look at the enormous amounts of Paclobutrazol fed to these poor rats to find the connection, then look at the conclusion.
“This substance/agent has not undergone a complete evaluation and determination under US EPA's IRIS program for evidence of human carcinogenic potential.”
Sorry for the long message, let me know what you think. I am no expert, I just looked this shit up instead of listening the ridiculous dickriding people do.